Stanton Precast recently provided their elliptical pipes as an effective, long term stormwater solution at a Midlothian housing development, supplying over 330 meters of 2650x1500mm including side entry manhole units complete with blank ends.
Analysis was carried out by Scottish Water Engineers and Ironside Farrar into the DIA (drainage impact assessment). Stanton Precast Elliptical Pipes were then specified because they met the project criteria, which required more storage with efficient self-cleansing properties.
Advance Construction Scotland Ltd were awarded the contract and started DIA work on site in July 2021 using the 330 metres of elliptical pipe to create two runs to sit parallel on a sloped area. Included in this were integrated side entry manhole units cast in to some of the elliptical pipes during manufacture. This eliminated the need for large diameter chambers to be constructed for man entry and maintenance as well as contributed to a quicker and easier installation.
Stanton Precast were able to double the amount of units being delivered to site per day to assist with speeding up installation on site. Lifting clutches were provided to assist with off- loading and placing units. A total of 69 loads were delivered in just 20 days to meet the installation scheduling – on time and in spec.
According to Stanton, the key benefits of using elliptical pipes are:
- Backfill and minimal aggregate required so less materials, less truck movements
- Can be installed at shallow depths due to structural profile
- Internal profile allows a constant self-cleansing flow velocity, even with low flows, negating the need for a secondary dry weather flow channel to be installed
- Cast in lifting anchors provide safer offloading and handling
Stanton Precast (formerly Stanton Bonna Concrete Ltd) are widely recognised as a leading UK manufacturer of precast concrete pipes, manholes, culverts and linear drainage as part of a comprehensive range of precast offsite solutions for water, highways, rail, housing, commercial, telecom and power sectors of the construction industry.